How do I convince my strict parents to let me use crutches when the doctor said that I don't need crutches?

To convince your strict parents, start by expressing your feelings about the situation and why you believe using crutches would be beneficial for you. Share any concerns you might have about stability or comfort while recovering. You could also suggest a trial period, emphasizing that you will follow the doctor's advice and stop using them if they are not necessary. Finally, reassure them that you prioritize your health and safety above all.